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Finding the Fourth Proportional to 61,686.97, 85,127.92 and 33,392.77

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Solution

The fourth proportional to 61,686.97, 85,127.92 and 33,392.77 is: 46,081.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.97 : 85,127.92 = 33,392.77 : x
  2. Step 2: Convert to fraction form
    61,686.97/85,127.92 = 33,392.77/x
  3. Step 3: Cross multiply
    61,686.97x = 85,127.92 × 33,392.77
  4. Step 4: Simplify right side
    61,686.97x = 2,842,657,053.14
  5. Step 5: Solve for x
    x = 2,842,657,053.14/61,686.97
  6. Step 6: Final answer
    x = 46,081.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.